Pneumatic liner for protective headgear



FIG. 1 is a front elevational view of a pneumatic liner for protective headgear showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is a cross sectional view taken along line 6--6 of FIG. 1;

FIG. 7 is a front elevational view of a modified form of the pneumatic liner for protective headgear shown in FIG. 1; and

FIG. 8 is a rear elevational view thereof. 

The ornamental design for a pneumatic liner for protective headgear, as shown and described. 